Note 13 - Acquisitions - Acquired Intangible Assets (Details) - USD ($) $ in Thousands		3 Months Ended
	Apr. 01, 2019	Mar. 31, 2019	Dec. 31, 2019
Intangible assets, estimated fair value			$ 21,982
Astero [Member]
Intangible assets, estimated fair value	$ 12,150
Customer Relationships [Member] | Astero [Member]
Intangible assets, estimated fair value	$ 80
Intangible assets, estimated useful life (Year)	6 years	4 years
Customer Relationships [Member] | Astero [Member] | Minimum [Member]
Intangible assets, estimated useful life (Year)
Customer Relationships [Member] | Astero [Member] | Maximum [Member]
Intangible assets, estimated useful life (Year)
Trade Names [Member] | Astero [Member]
Intangible assets, estimated fair value	$ 1,320
Intangible assets, estimated useful life (Year)	9 years	9 years
Trade Names [Member] | Astero [Member] | Minimum [Member]
Intangible assets, estimated useful life (Year)
Trade Names [Member] | Astero [Member] | Maximum [Member]
Intangible assets, estimated useful life (Year)
Technology-Based Intangible Assets [Member] | Astero [Member]
Intangible assets, estimated fair value	$ 10,750
Intangible assets, estimated useful life (Year)
Technology-Based Intangible Assets [Member] | Astero [Member] | Minimum [Member]
Intangible assets, estimated useful life (Year)	7 years
Technology-Based Intangible Assets [Member] | Astero [Member] | Maximum [Member]
Intangible assets, estimated useful life (Year)	8 years